[vsnet-alert 19583] Re: SDSS J164248.52+134751.4: new SU UMa-type dwarf nova

[hambsch at telenet.be]

It would be great also to mention the present magnitude of the star.

Regards,
Josch

----- Original Message -----
From: "Tonny Vanmunster" <tonny.vanmunster at gmail.com>
To: vsnet-alert at yahoogroups.com, "VSNET' 'ALERT" <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>, vsnet-outburst at yahoogroups.com, vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp, "Taichi Kato" <tkato at kusastro.kyoto-u.ac.jp>
Sent: Monday, March 14, 2016 8:34:38 AM
Subject: [vsnet-alert 19582] SDSS J164248.52+134751.4: new SU UMa-type dwarf	nova

Dear colleagues,

 

Last night (2016, Mar 13/14), I have been doing unfiltered CCD photometry of SDSS J164248.52+134751.4. Observations were made at CBA Belgium Observatory,  using a 0.35-m f/6.3 telescope and STT-3200ME CCD camera, under very clear skies. The resulting light curve clearly shows the presence of superhumps. As far as I know, this object was not previously known to be a SU Uma-type dwarf nova, which is now established with my observations. The amplitude is approx 0.27 mag. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined period of 0.0799 +/- 0.0029d. 

 

Further observations are evidently encouraged.

 

Observations will be sent to CBA and VSNET for further analysis.

 

Best regards

Tonny 

 

www.cbabelgium.com

www.peranso.com